CN104683045B - A kind of scanning receiver instantaneous dynamic range method of testing and its system - Google Patents
A kind of scanning receiver instantaneous dynamic range method of testing and its system Download PDFInfo
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- CN104683045B CN104683045B CN201410753760.XA CN201410753760A CN104683045B CN 104683045 B CN104683045 B CN 104683045B CN 201410753760 A CN201410753760 A CN 201410753760A CN 104683045 B CN104683045 B CN 104683045B
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Abstract
The present invention relates to a kind of scanning receiver instantaneous dynamic range method of testing, signal source control circuit control two paths of signals source produces modulated signal, through decaying and tested scanning receiver being sent into after combining, identification circuit detects the power output P of signal source I in scanning receiver1And signal source II power output P2With side-lobe signal power P2', P is compared in judgement2' and P1If P2’<P1, produce control signal, control signal source II power emission, until P2’=P1, calculate | P2‑P1|；The present invention also provides the system using the above method, including for producing two signal sources of modulated signal；For controlling the signal source control circuit of two signal sources simultaneously；For by the attenuator of signal attenuation；For by the multiplefrequency mixer of attenuated signal combining；For detection signal power and side-lobe signal power, adjudicate and produce the identification circuit of control signal.The present invention improves the speed and precision of scanning receiver instantaneous dynamic range measurement, reduces the influence of human factor, and testing efficiency is high.
Description
Technical field
The invention belongs to equipment performance testing field, relates in particular to a kind of scanning receiver instantaneous dynamic range test
Method and system.
Background technology
With the development of wireless communication technology, present with frequency equipment is more, covering bandwidth, frequency interleave are overlapping serious
Phenomenon, monitoring radio-frequency spectrum is particularly important.And scanning receiver is mainly completed to Frequency Hopping Signal and frequency band signals
Monitoring, be one of visual plant of monitoring radio-frequency spectrum.
What scanning receiver instantaneous dynamic range characterized is scanning receiver while receives the physics of minimum and maximum signal
Amount, it is the important indicator of scanning receiver performance.It is main logical in existing scanning receiver instantaneous dynamic range method of testing
Eye-observation is crossed, then manual Regulate signal source power size, test system precision is not high, and human factor influences big, test effect
Rate is relatively low.
The content of the invention
The technical problem to be solved in the present invention be to provide a kind of scanning receiver instantaneous dynamic range method of testing and its
System, the testing efficiency of scanning receiver instantaneous dynamic range test can be improved, to solve the problems, such as that prior art is present.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of scanning receiver instantaneous dynamic range method of testing, is comprised the steps of：
Step 1：Using signal source control circuit, control signal source I produces modulated signal, defeated through attenuator I, combiner
Go out to scanning receiver, the power output P1 of the signal source I in scanning receiver is detected using identification circuit；
Step 2：Using signal source control circuit, control signal source II produces modulated signal, through attenuator II, combiner,
Output detects signal source II power output P2 and signal source II in scanning receiver to scanning receiver using identification circuit
Side-lobes power P2 '；
Step 3：Using identification circuit, judgement comparison signal source II side-lobes power P2' and signal source I power output P1,
If P2’<P1, identification circuit produce control signal give signal source control circuit, control signal source II transmission powers increase automatically, directly
To P2’=P1, calculate and export tested scanning receiver instantaneous dynamic range △ P=| P2-P1|。
A kind of scanning receiver instantaneous dynamic range test system for implementing the above method, including controlled respectively with signal source
The signal source I and signal source II of circuit connection, signal source I are connected to combiner through attenuator I, and signal source II connects through attenuator II
Combiner, the input of the output end connection scanning receiver of combiner are connect, the output end of scanning receiver connects identification circuit,
Identification circuit is also connected with signal source control circuit；
Signal source I and signal source II, for generating frequency modulation, binary frequency shift keying modulated signal；
Signal source control circuit, signal source I and signal source II is individually controlled and jointly controlled for realizing；Set
Signal source I and signal source II signal pattern, working frequency and power output；
Attenuator I and attenuator II, for carrying out attenuation processing to signal source I and signal source II output modulated signal,
Obtain the signal for being adapted to be input to tested scanning receiver；
Combiner, for modulated signal caused by signal source I and signal source II to be combined into output to scanning receiver
Input port；
Identification circuit, for adjudicating comparison signal source II side-lobes power P2' and signal source I power output P1If P2’<
P1, identification circuit produces control signal and gives signal source control circuit, and control signal source II transmission powers increase automatically, until P2’=
P1, calculate and export tested scanning receiver instantaneous dynamic range △ P=| P2-P1|。
The identification circuit includes memory cell, comparator and the subtracter being sequentially connected.
The signal source I and signal source II are using multiband, the signal of more Modulation Types with identical service behaviour
Generator, output power range are -120dBm ~ 30dBm.
The present invention improves the speed and precision of scanning receiver instantaneous dynamic range measurement, reduces the shadow of human factor
Ring, testing efficiency is high.
Brief description of the drawings
Fig. 1 is scanning receiver instantaneous dynamic range test principle block diagram of the present invention.
Fig. 2 is identification circuit structural representation in scanning receiver instantaneous dynamic range test system of the present invention.
Fig. 3 is that identification circuit adjudicates flow chart in scanning receiver instantaneous dynamic range test system of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Referring to Fig. 1, Fig. 2 and Fig. 3, the present invention provides a kind of scanning receiver instantaneous dynamic range method of testing, comprising with
Lower step：
Step 1：Using signal source control circuit, control signal source I produces modulated signal, defeated through attenuator I, combiner
Go out to scanning receiver, the power output P1 of the signal source I in scanning receiver is detected using identification circuit；
Step 2：Using signal source control circuit, control signal source II produces modulated signal, through attenuator II, combiner,
Output detects signal source II power output P2 and signal source II in scanning receiver to scanning receiver using identification circuit
Side-lobes power P2 '；
Step 3：Using identification circuit, judgement comparison signal source II side-lobes power P2' and signal source I power output P1,
If P2’<P1, identification circuit produce control signal give signal source control circuit, control signal source II transmission powers increase automatically, directly
To P2’=P1, calculate and export tested scanning receiver instantaneous dynamic range △ P=| P2-P1|。
The speed and precision of scanning receiver instantaneous dynamic range measurement are the method increase, reduces the shadow of human factor
Ring, testing efficiency is high.
Referring to Fig. 1, the present invention also provides a kind of scanning receiver instantaneous dynamic range test system using the above method,
Including the signal source I and signal source II being connected with signal source control circuit, signal source I is connected to combiner, signal through attenuator I
Source II is through attenuator II connection combiners, the input of the output end connection scanning receiver of combiner, scanning receiver it is defeated
Go out end connection identification circuit, identification circuit is also connected with signal source control circuit；
Signal source I and signal source II is that two signals with the multiband of identical service behaviour, more Modulation Types occur
Device, frequency modulation can be generated（FM）, binary frequency shift keying（2FSK）Deng the analog/digital modulated signal of Modulation Types, and have
Larger output power range, such as power bracket are -120dBm ~ 30dBm.
Signal source control circuit, signal source I and signal source II is individually controlled and jointly controlled for realizing；Set
Signal source I and signal source II signal pattern, working frequency and power output.
Attenuator I and attenuator II, for carrying out attenuation processing to signal source I and signal source II output modulated signal,
Obtain the signal for being adapted to be input to tested scanning receiver.
Combiner, it is a kind of multiband combiner, for modulated signal caused by signal source I and signal source II to be closed
Road is exported to the input port of scanning receiver.
Identification circuit, referring to Fig. 2 and Fig. 3, including memory cell, comparator and the subtracter being sequentially connected；Memory cell
Store the signal source I received power P1, signal source II power P2With signal source II side-lobes power P2’；Comparator decision ratio
Side-lobes power P compared with signal source II2' and signal source I power output P1If P2’<P1, produce control signal and controlled to signal source
Circuit, control signal source II transmission powers increase automatically, until P2’=P1；Subtracter calculates and exports tested scanning receiver wink
When dynamic range △ P=| P2-P1|。
Claims (4)
1. a kind of scanning receiver instantaneous dynamic range method of testing, it is characterised in that comprise the steps of：
Step 1：Using signal source control circuit, control signal source I produces modulated signal, and through attenuator I, combiner, output is extremely
Scanning receiver, the power output P of the signal source I in scanning receiver is detected using identification circuit1；
Step 2：Using signal source control circuit, control signal source II produces modulated signal, through attenuator II, combiner, output
To scanning receiver, using the power output P of signal source II in identification circuit detection scanning receiver2With signal source II secondary lobe
Power P2’；
Step 3：Using identification circuit, judgement comparison signal source II side-lobes power P2' and signal source I power output P1If
P2’<P1, identification circuit produce control signal give signal source control circuit, control signal source II transmission powers increase automatically, until
P2’=P1, calculate and export tested scanning receiver instantaneous dynamic range △ P=| P2-P1|。
A kind of 2. scanning receiver instantaneous dynamic range test system for implementing claim 1 methods described, it is characterised in that：Bag
The signal source I and signal source II being connected respectively with signal source control circuit are included, signal source I is connected to combiner through attenuator I, letter
Number source II is through attenuator II connection combiners, the input of the output end connection scanning receiver of combiner, scanning receiver
Output end connects identification circuit, and identification circuit is also connected with signal source control circuit；
Signal source I and signal source II, for generating frequency modulation, binary frequency shift keying modulated signal；
Signal source control circuit, signal source I and signal source II is individually controlled and jointly controlled for realizing；Setting signal
Source I and signal source II signal pattern, working frequency and power output；
Attenuator I and attenuator II, for carrying out attenuation processing to signal source I and signal source II output modulated signal, obtain
It is adapted to the signal for being input to tested scanning receiver；
Combiner, it is defeated to scanning receiver for modulated signal caused by signal source I and signal source II to be combined into output
Inbound port；
Identification circuit, for adjudicating comparison signal source II side-lobes power P2' and signal source I power output P1If P2’<P1, know
Other circuit produces control signal and gives signal source control circuit, and control signal source II transmission powers increase automatically, until P2’=P1, meter
Calculate and export tested scanning receiver instantaneous dynamic range △ P=| P2-P1|。
3. scanning receiver instantaneous dynamic range test system according to claim 2, it is characterised in that：The identification electricity
Road includes memory cell, comparator and the subtracter being sequentially connected.
4. scanning receiver instantaneous dynamic range test system according to claim 2, it is characterised in that：The signal source
I and signal source II is using multiband, the signal generator of more Modulation Types with identical service behaviour, output power range
For -120dBm ~ 30dBm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410753760.XA CN104683045B (en) | 2014-12-10 | 2014-12-10 | A kind of scanning receiver instantaneous dynamic range method of testing and its system |
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| CN201410753760.XA CN104683045B (en) | 2014-12-10 | 2014-12-10 | A kind of scanning receiver instantaneous dynamic range method of testing and its system |
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| CN104683045B true CN104683045B (en) | 2017-11-14 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064572A (en) * | 2006-04-25 | 2007-10-31 | 华为技术有限公司 | Method, test tool and test system for testing sensitivity of terminal receiver |
| CN101605005A (en) * | 2009-07-31 | 2009-12-16 | 中国电子科技集团公司第四十一研究所 | Frequency-hopping radio station indicator testing device in half-duplex pilot frequency communication |
| CN201666927U (en) * | 2010-04-06 | 2010-12-08 | 南京工业职业技术学院 | Spatial and tridimensional electromagnetic interference instrument based on single chip micro-computer |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064572A (en) * | 2006-04-25 | 2007-10-31 | 华为技术有限公司 | Method, test tool and test system for testing sensitivity of terminal receiver |
| CN101605005A (en) * | 2009-07-31 | 2009-12-16 | 中国电子科技集团公司第四十一研究所 | Frequency-hopping radio station indicator testing device in half-duplex pilot frequency communication |
| CN201666927U (en) * | 2010-04-06 | 2010-12-08 | 南京工业职业技术学院 | Spatial and tridimensional electromagnetic interference instrument based on single chip micro-computer |
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